1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include <dbus/dbus.h>
31 typedef struct Manager Manager;
32 typedef enum WatchType WatchType;
33 typedef struct Watch Watch;
35 typedef enum ManagerRunningAs {
36 MANAGER_INIT, /* root and pid=1 */
37 MANAGER_SYSTEM, /* root and pid!=1 */
38 MANAGER_SESSION, /* non-root */
39 _MANAGER_RUNNING_AS_MAX,
40 _MANAGER_RUNNING_AS_INVALID = -1
61 DBusTimeout *bus_timeout;
72 #define SPECIAL_DEFAULT_TARGET "default.target"
73 #define SPECIAL_SYSLOG_SERVICE "syslog.service"
74 #define SPECIAL_DBUS_SERVICE "messagebus.service"
75 #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
76 #define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
77 #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
80 /* In which mode are we running */
81 ManagerRunningAs running_as;
83 uint32_t current_job_id;
85 /* Note that the set of units we know of is allowed to be
86 * incosistent. However the subset of it that is loaded may
87 * not, and the list of jobs may neither. */
89 /* Active jobs and units */
90 Hashmap *units; /* name string => Unit object n:1 */
91 Hashmap *jobs; /* job id => Job object 1:1 */
93 /* To make it easy to iterate through the units of a specific
94 * type we maintain a per type linked list */
95 LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]);
97 /* Units that need to be loaded */
98 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
100 /* Jobs that need to be run */
101 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
103 /* Units and jobs that have not yet been announced via
104 * D-Bus. When something about a job changes it is added here
105 * if it is not in there yet. This allows easy coalescing of
106 * D-Bus change signals. */
107 LIST_HEAD(Meta, dbus_unit_queue);
108 LIST_HEAD(Job, dbus_job_queue);
110 /* Jobs to be added */
111 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
112 JobDependency *transaction_anchor;
114 bool dispatching_load_queue:1;
115 bool dispatching_run_queue:1;
116 bool dispatching_dbus_queue:1;
118 bool request_bus_dispatch:1;
120 Hashmap *watch_pids; /* pid => Unit object n:1 */
127 char **sysvinit_path;
129 /* Data specific to the device subsystem */
131 struct udev_monitor* udev_monitor;
134 /* Data specific to the mount subsystem */
135 FILE *proc_self_mountinfo;
138 /* Data specific to the D-Bus subsystem */
143 Manager* manager_new(void);
144 void manager_free(Manager *m);
146 int manager_coldplug(Manager *m);
148 Job *manager_get_job(Manager *m, uint32_t id);
149 Unit *manager_get_unit(Manager *m, const char *name);
151 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
152 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
154 int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret);
155 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
157 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
158 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
160 void manager_transaction_unlink_job(Manager *m, Job *j);
162 void manager_clear_jobs(Manager *m);
164 unsigned manager_dispatch_load_queue(Manager *m);
165 unsigned manager_dispatch_run_queue(Manager *m);
166 unsigned manager_dispatch_dbus_queue(Manager *m);
168 int manager_loop(Manager *m);
170 const char *manager_running_as_to_string(ManagerRunningAs i);
171 ManagerRunningAs manager_running_as_from_string(const char *s);